what size threads?

Tue Sep 14, 2004 9:36 am

what size threads for the gas line on the carb and sediment bulb end?
thanks for the help
Chad

Tue Sep 14, 2004 10:02 am

Chad,

You're in luck... it's a common thread. 1/2 - 20

Tue Sep 14, 2004 10:03 am

I used a brake line with fittings already on it, it worked perfect
Rick

Tue Sep 14, 2004 10:13 am

George
thanks for the help. I am in process of using a spare carb where the old carb was beat up bad but I fixed it and it rund better than my other carb and I plan just want to run it for a while.
the thread on the carb end is a bigger size becasue someone in its past screwed in what looks like a large air hose end. so I am trying to make a new gas line so I do not have to use a rubber hose.
thanks for the help.
Chad

Tue Sep 14, 2004 1:11 pm

cjpenny89 wrote:George
thanks for the help. I am in process of using a spare carb where the old carb was beat up bad but I fixed it and it rund better than my other carb and I plan just want to run it for a while.
the thread on the carb end is a bigger size becasue someone in its past screwed in what looks like a large air hose end. so I am trying to make a new gas line so I do not have to use a rubber hose.
thanks for the help.
Chad


Chad,

It's unfortunate that the thread is so close to a 1/4" pipe thread that maybe some think it is just a little rough and force the hose fitting in. I'm guessing that that's why so many of the threads are stripped. It's an easy mistake to make since the hose fitting does seem to start. Some have reported success restoring the thread by filling the thread with J.B. weld and re-tapping to 1/2-20.

Tue Sep 14, 2004 1:42 pm

well that is exactly my problem.
I can not find a compression fitting that has 1/4 npt thread for the screwed up carb end that will match up to a compression fitting on the sediment bole end.
I need a 1/2-20 comprssion fitting to use 5/16 brake line but the compression fittings I find for the carb end or for 1/4" tubing or 3/8" tubing.
I need to find a compression fitting that will let me use the 5/16 brake line and then use a 5/16 compression fitting on the carb end for 5/16 tubing
any ideas?

Tue Sep 14, 2004 9:40 pm

Hi Chad

I think Mr. Willer just gets a piece of 5/16 brake line, and cuts of the flare on the ends, and uses the ends that come with the brake line along with compression ferruls. Someone posted the other day and I think you need about a 20 inch oiece of the 5/16 brake line tubing. Sorry I don't know how to spell ferruls. 5/16 compression rings. Paul K in N.H. :roll:

Sun Sep 19, 2004 6:30 am

cjpenny89 wrote:well that is exactly my problem.
I can not find a compression fitting that has 1/4 npt thread for the screwed up carb end that will match up to a compression fitting on the sediment bole end.
I need a 1/2-20 comprssion fitting to use 5/16 brake line but the compression fittings I find for the carb end or for 1/4" tubing or 3/8" tubing.
I need to find a compression fitting that will let me use the 5/16 brake line and then use a 5/16 compression fitting on the carb end for 5/16 tubing
any ideas?


Go to NAPA they shold have what your looking for but not in where your looking.
You will have to go to the book & look under comp. fittings for air lines as many of the 10 & 18 wheel trucks us 1/4" pipe on one end & 5/16"on the other.
If they don't try some of the major truck repair shops or dealers.

Sun Sep 19, 2004 9:09 am

Dale51 wrote:
cjpenny89 wrote:well that is exactly my problem.
I can not find a compression fitting that has 1/4 npt thread for the screwed up carb end that will match up to a compression fitting on the sediment bole end.
I need a 1/2-20 comprssion fitting to use 5/16 brake line but the compression fittings I find for the carb end or for 1/4" tubing or 3/8" tubing.
I need to find a compression fitting that will let me use the 5/16 brake line and then use a 5/16 compression fitting on the carb end for 5/16 tubing
any ideas?


Go to NAPA they shold have what your looking for but not in where your looking.
You will have to go to the book & look under comp. fittings for air lines as many of the 10 & 18 wheel trucks us 1/4" pipe on one end & 5/16"on the other.
If they don't try some of the major truck repair shops or dealers.


Why not use the right fitting? The common 5/16 steel brake line has the right threads for both ends. It's just that the flare must be cut off and replaced by the compression ferrule. If that doesn't work, it is because someone has boogered the thread by using the wrong fitting.

Image

Nice.

Sun Sep 19, 2004 9:27 am

Hey George, that's really nice - I'm gonna try that next - looks a lot more original than my black piece of fuel line :D

Oh, and I haven't heard the term boogered for a while - thanks for a laugh :D

Actually, it comes from the British term "buggered" - and I can't say in good company what that stands for.

Sun Sep 19, 2004 9:35 am

That does make a really nice looking fuel line. I think that will be my project for the day.

Thanks for the tip guys.

Sun Sep 19, 2004 10:26 am

George Willer wrote:
Dale51 wrote:
cjpenny89 wrote:well that is exactly my problem.
I can not find a compression fitting that has 1/4 npt thread for the screwed up carb end that will match up to a compression fitting on the sediment bole end.
I need a 1/2-20 comprssion fitting to use 5/16 brake line but the compression fittings I find for the carb end or for 1/4" tubing or 3/8" tubing.
I need to find a compression fitting that will let me use the 5/16 brake line and then use a 5/16 compression fitting on the carb end for 5/16 tubing
any ideas?


Go to NAPA they shold have what your looking for but not in where your looking.
You will have to go to the book & look under comp. fittings for air lines as many of the 10 & 18 wheel trucks us 1/4" pipe on one end & 5/16"on the other.
If they don't try some of the major truck repair shops or dealers.


Why not use the right fitting? The common 5/16 steel brake line has the right threads for both ends. It's just that the flare must be cut off and replaced by the compression ferrule. If that doesn't work, it is because someone has boogered the thread by using the wrong fitting.

Image


He would like to but PO ran a 1/4" pipe fitting in to it as he posted above
so now the 5/16 1/2X20 line fitting has wrong thread.

Sun Sep 19, 2004 10:51 am

Dale51 wrote: He would like to but PO ran a 1/4" pipe fitting in to it as he posted above
so now the 5/16 1/2X20 line fitting has wrong thread.


Repair the threads with JB weld.